With this introduction, finish up more confused! (5)
I believe the answer is:
proem
'with this introduction' is the definition.
'proem' can be an answer for 'introduction' (I've seen this in another clue). I'm unsure of the rest of the definition.
'finish up more confused' is the wordplay.
'finish' means to take half the letters.
'confused' is an anagram indicator.
'up' with half the letters taken is 'p'.
'more' is an anagram of 'roem'.
'p'+'roem'='PROEM'
Can you help me to learn more?
(Other definitions for proem that I've seen before include "introduction" , "introductory piece" , "Prelude" , "Preliminary part" .)